氮肥对多花黑麦草产量与品质的影响  

Effects of Nitrogen Application on Yield and Quality of Lolium Multiflorum

作　　者：刘杰[1] 江生泉[1] LIU Jie;JIANG Shengquan(School of Mechanical and Automotive Engineering,Chuzhou Vocational and Technical College,Chuzhou 239000,China)

机构地区：[1]滁州职业技术学院机械与汽车工程学院,安徽滁州239000

出　　处：《信阳农林学院学报》2023年第3期87-92,共6页Journal of Xinyang Agriculture and Forestry University

基　　金：滁州职业技术学院校级自科重点项目(ZKZ-2022-03);安徽省提质培优项目-示范性教师企业实践基地项目(2022TZPY033)。

摘　　要：研究了不同氮肥组合对多花黑麦草(Lolium multiflorum)生长发育、种子产量、草产量及品质的影响,旨在探索最佳氮肥施用方法,提高多花黑麦草的种子产量和草产量。试验结果表明:在参试氮肥组合中,处理T_(10)、T_(11)、T_(12)、T_(13)具有最高的种子产量,分别为2218.4 kg/hm^(2)、2273.1 kg/hm^(2)、2228.8 kg/hm^(2)、2192.5 kg/hm^(2),与其他处理达到显著差异(P<0.05),处理T_(11)的经济效益最高。多花黑麦草种子产量与各时期氮肥用量的回归方程为y(种子产量)=690.012+6.986x_(1)(三叶期氮肥量)+6.537x_(2)(分蘖期氮肥量)+4.644x 3(抽穗期氮肥量),其增产效应大小为三叶期氮肥>分蘖期氮肥>抽穗期氮肥。各阶段的草产量随着施氮总浓度增大而增大,处理T_(11)在抽穗期、种子成熟期的草产量最大,分为603.24g/m^(2)、1047.92g/m^(2),与其他处理达到显著差异(P<0.05)。粗蛋白最大是处理T_(12)、T_(13),粗脂肪最大是处理T_(10)、T_(11)、T_(12)、T_(13),粗纤维最小是处理T_(11)、T_(13),粗灰分最小是处理T_(10)、T_(11)、T_(12)、T_(13),与其他处理达到显著差异(P<0.05)。综合以上结论,处理T_(11)为最佳氮肥施用方式,所得结论可为多花黑麦草生产的氮肥管理提供技术参考。The effects of different nitrogen fertilizer combinations on growth,yield and quality of Lolium multiflorum were studied in order to explore the best nitrogen fertilizer application mode,and improve seed yield and grass yield.Among the tested nitrogen fertilizer combinations,treatment of T_(10),T_(11),T_(12)and T_(13)had the highest seed yield of 2218.4 kg/hm^(2),2273.1 kg/hm^(2),2228.8 kg/hm^(2),2192.5 kg/hm^(2)respectively,which was significantly different from other treatments(P<0.05).Treatment of T_(11)had the highest economic benefit.The regression equation between the seed yield and the amount of nitrogen fertilizer was y(seed yield)=690.012+6.986x_(1)(amount of nitrogen fertilizer at trilobite stage)+6.537x_(2)(amount of nitrogen fertilizer at tiller stage)+4.644x 3(amount of nitrogen fertilizer at heading stage).The yield increasing effect wasas follows:nitrogen fertilizer at trilobite stage>nitrogen fertilizer at tiller stage>nitrogen fertilizer at heading stage.The grass yield increased with the increase of total nitrogen application concentration.The grass yield of T_(11)treatment was the highest at heading stage and seed maturity stage,which was 603.24 g/m^(2)and 1047.92 g/m^(2)respectively,with significant difference compared with other treatments(P<0.05).The maximum crude protein was T_(12),T_(13)treatment,the maximum crude fat was T_(10),T_(11),T_(12),T_(13)treatment,the minimum crude fiber was T_(11),T_(13)treatment and the minimum crude ash was T_(10),T_(11),T_(12),T_(13)treatment,which was significantly different from other treatments(P<0.05).To sum up,treatment of T_(11)is the best nitrogen fertilizer application mode,and the results can provide technical reference for nitrogen management of production.

关 键 词：多花黑麦草 氮肥 产量 品质 

分 类 号：S688.4[农业科学—观赏园艺]